However, best performance is the T7600 which is a 2.33GHz CPU. I upgraded to a 2.0GHz T7200, which can be found on ebay for under $4. Step 2 - Upgrade your CPU to a Core 2 Duo The iMac will start the EFI update (a progress bar should be displayed) Turn it on and keep pressed power button until the iMac light ENDS blinking Then run it and wait until everything finishes (at the end it should report that return code is 0, which means that everything worked correctly). Sudo /Volumes/Ramdisk/UpdateEFIiMac41-iMac51.sh Open a terminal, type sudo and then drag and drop the UpdateEFIiMac41-iMac51.sh script: Then run it and wait until everything finish Open a terminal and drag and drop on it the ExtractAndPatchEFIFiles.sh script. dmg from Apple: iMacEFIiMac41.dmg and iMacEFIiMac51.dmg Select "iMac41-iMac51 Firmware Tool.app", right click and then click on "Show packet content"Ĭopy the following files to "/Volumes/RamDisk": ExtractAndPatchEFIFiles.sh, iMac41EFIUpdater.patch, iMac51EFIUpdater.patch and UpdateEFIiMac41-iMac51.sh.Ĭopy also the two downloaded. It will report error 5530 as before and it will create on desktop a RamDisk volume. However, here is a workaround from the source forum it's pretty straightforward.Įfi update 1.1: iMacFirmwareUpdate.dmg -> rename to -> iMacEFIiMac41.dmgĮfi update 1.2: iMacFirmwareUpdate1.2.dmg -> rename to -> iMacEFIiMac51.dmg Unfortunately this tool no longer works properly as the URL to download the firmware has been changed. Unzip this file in a location of your choice on your iMac in MacOS: Step 1 - Upgrade the firmware to iMac5,1įirst up, you need to upgrade the firmware on you iMac4,1 to iMac5,1. This is a guide on how to upgrade the iMac4,1 to run the latest (as of Feb 2020) Windows 10 圆4 and this depo contains most of the files and information needed. The first Intel iMac was released in early 2006. How to get the first Intel iMac to run Windows 10 imac4-1-to-windows10圆4 Purpose of this document
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